Process of preserving milk



July 6,1326. I 1,591,142 J. '(3. S. REEVES PROCESS OF PRESERVING MILKFiled Jan. 9, 1924 Jddfieeves I INVENTOR.

ATTORNEYS.

mama in! 6," 192a .1

ESTPA'TENT? OFFER eonencysnnvarrrr Braves, or mimics nines, anenn'rma.

uss mums, 0,1924, Serial no. 885,282, and 1a mm, mama August 21, 1923.

. During a long time I- liavebeen doing experiments by various methods,endeavouring to conserve the natural cows milk witheven years,

. to society as out it being necessary to add any substance to it tomaintain its conservation during months and even years inside the cans,remaining inalterable in spite of the condi-' tions of the climate ofthe country in which it is stored, warm or cold, varying'regularly bythe change of seasons, or irregularly in any season.

' The object of my effort was to resolve a problem which I haveconsidered and still consider of the utmost importance in cattleraising,as it relates to the conservation of milk and the possibility 'ofgetting this to become an export article, .as its consumption in theworld is imperiously demanded by children, and many countries do not,and will never be able to possess the suflicient cattle for their milksupply.

As milk is a product very easily altered and rapidly decomposed, it wasnot possible to me to anticipate any judgment on the efficiency of anyof the processes which I had tested, till-the present, when after longpractice and storage and analysis of the tinned milk, I can aflirm thatsuccess has crowned my effort, in every'sense.

I have not" wished to give a process to society without being perfectlyconvinced of ,'ts efiiciency and-practicabllity, but at present, havingadopted a definite rocess to conserve milk,'wh1ch satisfies a1 -myendeavours, as it concerns itself with all the characteristics of freshmilk for months and I find myself enabled to declare I declare by thepresent detail and in compenatent which I claim, ractical method k inits natural memory, with ever sation of the invention a proved andindustria y for the conservation of mi state for a practicallyindefinite length of time.

In the accompanying drawing wherein I 1 have illustrated a metallic canspecially devised for carrying out the improved process,

Fig. 1 is a top plan view of the can. Figs. 2, 3 and 4 are sectionalviews there of showing the difierent steps incident to the closin of thecan and sealing of the contents t ereof.

Referring to the drawings in detail the body of the can is indicated at5 and is provided with a closed bottom 6 and a top 7 having an opening 8therein of sufiicient size ,to permit the canto be readilyfilledfwithmilk. The opening 8 is circular and the edge thereof is provided with anannular,

To carry out my invention the following process must be followed.

When the milk arrives, it analyzed so as to verify if it isin perfectcondition to I serve as a food, then it is carefully filtered;

a can 5 is filled with milk almost to the top; the cover 11 isimmediately placed on the top 7 so that the lapel 10 of the cover 11will enter into the depression or rabbet', around 9 the hole of thecover and the lapel is soldered inall its contour as indicated at 13,procuring 'a' perfectly hermetical soldering.

After the cans: have been filled as it has been described, they areplaced in a water- ,bath in which lime chloride has been dissolved,warmed by steam winding pipes or by the direct action of hearth flames,the water of the bath reaching a little higher than the two thirds ofthe'height of the cans; they remain there a few mlnutes, and

when the milk appears through the capilhole ,12 of the cover, said hole12 is H lary hermetically obturated by a drop of tin 14; the cans arethen tilted on one side in the water-bath where they must remain intheir.

hermetically shut condition for ten minutes, at a temperature of 130 to140? (centiade), after which the .cans are taken out of the bathand arerapidly cooled by some convenient refrigerating system; after this theymay be stored, the operation being thenfinished and the conservation ofthe milk fdr an unlimited lengthof time, being ensured.

' Having thus described the nature of my invention and the way to "carryit out practically, I declare that I claim as my exclusive invention andright:

, 1. A process for the preservation of milk in containers having afilling opening therein, consisting in introducing milk through thefilling opening, partially closing the filling opening whereby to reducethe size

